Since Windows 7 has done away with that handy green 'Up One Level' button I have been looking for a replacement for Windows Explorer...
I've found it... and there IS an 'Up One Level' button!
Price: Free review details

A very simple application which starts when your system does and adds a handy taskbar to your second monitor. If you have a laptop pc that is plugged into a larger monitor also then you should get this.
Price: Free review details